Optical measurements of ripples using a scanning-laser slope gauge: Part II--data analysis and interpretation from a laboratory wave tank

Details Optical measurements of ripples using a scanning-laser slope gauge: Part II--data analysis and interpretation from a laboratory wave tank Optical measurements of ripples using a scanning-laser slope gauge: Part II--data analysis and interpretation from a laboratory wave tank

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1749..272b&link_type=abstract

Proc. SPIE Vol. 1749, p. 272-282, Optics of the Air-Sea Interface: Theory and Measurement, Leland Estep; Ed.

Physics

Optics

Scientific paper

A description of a new scanning laser slope gauge is given and the preliminary results obtained from laboratory wave tank measurements are presented. The device relies on the measurements of two components of surface slope to compute spatial and temporal lags used to estimate the full three-dimensional spectrum. The device is capable of resolving frequencies in the range between zero and 63 Hertz, and wavelengths in the range between 0.63 and 20 centimeters. The technique makes use of a two-dimensional laser scanner which samples the perimeter of a 10 centimeter square (an unfilled aperture.) The laboratory results show mechanically generated waves propagating on both distilled water and a one micro-molar solution of Triton-X100R in distilled water. Results indicate the device is well suited to measure the full three dimensional spectra of capillary-gravity waves and is capable of providing ground-truth measurements for the verification of remotely sensed ocean surface features.

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